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As a leading manufacturer based in Tianjin, China, Tianjin ZhuoLiNeng (ZLN) Technology Co., Ltd brings you the Fully Automatic Liquid Chlorine Dosing System with Less Investment on Salt and PLC Control. This advanced system is engineered to precisely inject liquid chlorine into water streams for disinfection, without the need for costly salt-based electrolysis equipment. By directly dosing liquid chlorine, our solution significantly reduces initial capital investment on salt and associated handling equipment, while delivering reliable, automated performance. Built with a robust PLC controller, the system ensures consistent dosing accuracy, minimal chemical waste, and seamless integration into existing water treatment processes. Whether you operate a municipal water plant, a swimming pool, or an industrial cooling system, this dosing system offers a smart, cost-effective alternative to traditional chlorination methods.
Product Features & Technical Specifications
Fully Automatic PLC Control – The system uses a programmable logic controller (PLC) to automatically adjust the dosing rate based on real-time water flow or residual chlorine signals. It eliminates manual intervention and reduces human error.
Low Salt Investment – Unlike on-site hypochlorite generation systems that require large amounts of salt, our system directly injects liquid chlorine. This cuts down the cost of purchasing, storing, and handling salt, making it ideal for facilities looking to minimize operational expenses.
High Precision Metering Pump – Equipped with a durable diaphragm or peristaltic pump, the system delivers liquid chlorine with accuracy of ±2%, ensuring consistent disinfection while avoiding over-chlorination.
Corrosion-Resistant Materials – All wetted parts are made of UPVC, PVC, or PVDF, providing excellent resistance to chlorine corrosion and extending the equipment’s lifespan.
User-Friendly Interface – A clear touch screen (optional) or keypad allows operators to set parameters, monitor dosage, and review alarms. Remote communication via Modbus or 4-20mA is supported for integration with SCADA systems.
Compact Skid Design – The system is pre-assembled on a stainless steel skid, simplifying installation. It occupies minimal floor space and can be deployed quickly.
| Parameter | Specification |
|---|---|
| Maximum Flow Rate | 500 L/h (customizable up to 2000 L/h) |
| Operating Pressure | Up to 10 bar |
| Power Consumption | 0.5 – 2.5 kW |
| Control Accuracy | ±2% of set point |
| Input Signal | 4-20mA, Pulse, RS485 |
| Ambient Temperature | 0°C to 50°C |
Major Benefits for Customers
Cost Savings: By eliminating salt investments, the system reduces upfront and operating costs. You save on raw material purchase, storage space, and labor for salt handling.
Improved Safety: Liquid chlorine is dosed in a closed-loop system, minimizing operator exposure. The PLC monitors leaks and automatically shuts down if abnormal conditions are detected.
Reliable Disinfection: Precise dosing ensures residual chlorine levels are maintained within safe limits, meeting regulatory standards for drinking water or recreational water.
Easy Maintenance: The pump and valves are designed for quick replacement. Most parts are standard and readily available.
Scalability: Multiple units can be synchronized for larger flow requirements. The PLC can be expanded with additional I/O modules.
Why Choose ZLN Technology?
ZLN Technology has been a trusted manufacturer in the water treatment industry for years. We hold quality management certification and adhere to strict production standards. Our team of engineers designs each dosing system with customization in mind – from flow rate range to control interface. With our headquarters in Tianjin, we enjoy convenient access to one of the busiest ports in China, ensuring timely delivery to markets across North America, South America, Europe, Asia, Africa, and Oceania. We have successfully supplied projects in over 30 countries, and our after-sales service team provides remote technical support and spare parts quickly. When you choose our Fully Automatic Liquid Chlorine Dosing System, you are investing in a durable, efficient, and low-maintenance solution that will serve your disinfection needs for years. Contact us today for a tailored quote and technical proposal.
Frequently Asked Questions (FAQ)
Q: What is the difference between this system and a salt-based chlorine generator?
A: This system directly injects liquid chlorine (NaClO or Cl2) into the water, while salt-based generators produce chlorine from salt via electrolysis. Our system requires no salt purchase, storage, or electrolysis cells, resulting in lower initial investment and simpler operation.Q: Can the PLC be connected to a remote monitoring system?
A: Yes, the PLC supports standard communication protocols such as Modbus RTU and 4-20mA. It can be integrated with your SCADA or BMS system for remote control and data logging.Q: What is the typical lifespan of the metering pump?
A: With proper maintenance, the pump diaphragm or hose can last 1-3 years depending on operating conditions. We provide spare parts and replacement kits.Q: Is the system suitable for seawater or high-chloride environments?
A: The standard materials (UPVC) are resistant to chlorine, but for seawater or high-temperature applications, we recommend upgrading to PVDF or titanium wetted parts. Please consult our sales team.Q: What safety features are included?
A: The system includes a pressure relief valve, leak detection sensor (optional), emergency stop button, and low-level alarm for the chlorine tank. The PLC automatically shuts off the pump if abnormal pressure or flow is detected.Q: Can I adjust the dosing rate manually?
A: Yes, the system can operate in manual mode via the touch screen or keypad. You can set a fixed flow rate or dosage amount.Q: How long does installation take?
A: The system arrives pre-assembled on a skid. Typical installation time is 1-2 days, including connection to the chlorine supply, power, and water line.Q: Do you offer customization for different flow ranges?
A: Absolutely. We can configure the pump size, PLC program, and tank capacity to match your specific flow requirements up to 2000 L/h or more. Contact us with your parameters.
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